I had heard Ray and Rondo didn't get along as far back as 2008. Ray tried to be a mentor to Rondo and Rondo stubbornly refused to listen. It's probably why Rondo never learned how to shoot.
It's undeniable... Rondo has been a difficult guy to get along with in the past. It's been confirmed by practically everyone. He's got some attitude problems. I don't know if that means he should be fully blamed for Ray leaving, though... Boston sort of drove Ray out of town. We tried to trade him several times, we benched him for Avery Bradley (who is still completely unproven)... we went out and gave Jason Terry the full MLE when our dire need is size (effectively making Ray's role even smaller). It can all be perceived as a spit in the face... I'm sure Pat Riley was excellent in manipulating Ray based on these facts.
We will miss that consistent shooting and Rondo will miss those easy assists. Sad day for the Celtics